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Old 18th December 2017, 18:35   #47815  |  Link
Manni
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Join Date: Jul 2014
Posts: 942
Quote:
Originally Posted by mclingo View Post
how are you managing this then, is your desktop set to 420 60hz and you have script or something to drop it into 444 fulll RGB before you play a movie, or do you have to change it manually every time?
With nVidia (using 385.28 if Windows 10), as explained many times, you select in the nVidia CP 4K23p (apply), then you select RGB Full 4:4:4 12bits (apply). That's it. Then if the content needs more than 18Gb/s bandwidth in 12bits (say you play 4K60p content), the driver switches automatically to 4K60p RGB Full 8bits 4:4:4, and back to 12bits when the playback is over. There is no need for a script. But it doesn't work the other way around. If you are in 4K60p when you select the bandwidth, then you CAN'T select 12bits, you're limited to 8bits, simply because it's not possible to select more than 8bits in 4K60p 4:4:4.
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Last edited by Manni; 18th December 2017 at 18:38.
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